Move project nav checks to helper

app/helpers/projects_helper.rb

@@ -48,4 +48,36 @@ module ProjectsHelper
   def remove_project_message(project)
     "You are going to remove #{project.name_with_namespace}.\n Removed project CANNOT be restored!\n Are you ABSOLUTELY sure?"
   end
+
+  def project_nav_tabs
+    @nav_tabs ||= get_project_nav_tabs(@project, current_user)
+  end
+
+  def project_nav_tab?(name)
+    project_nav_tabs.include? name
+  end
+
+  private
+
+  def get_project_nav_tabs(project, current_user)
+    nav_tabs = [:home]
+
+    if project.repo_exists? && can?(current_user, :download_code, project)
+      nav_tabs << [:files, :commits, :network, :graphs]
+    end
+
+    if project.repo_exists? && project.merge_requests_enabled
+      nav_tabs << :merge_requests
+    end
+
+    if can?(current_user, :admin_project, project)
+      nav_tabs << :settings
+    end
+
+    [:issues, :wiki, :wall, :snippets].each do |feature|
+      nav_tabs << feature if project.send :"#{feature}_enabled"
+    end
+
+    nav_tabs.flatten
+  end
 end

app/views/layouts/nav/_project.html.haml

@@ -3,43 +3,48 @@
     = link_to project_path(@project), title: "Project" do
       %i.icon-home
 
-  - unless @project.empty_repo?
-    - if can? current_user, :download_code, @project
+  - if project_nav_tab? :files
     = nav_link(controller: %w(tree blob blame)) do
       = link_to 'Files', project_tree_path(@project, @ref || @repository.root_ref)
+
+  - if project_nav_tab? :commits
     = nav_link(controller: %w(commit commits compare repositories protected_branches)) do
       = link_to "Commits", project_commits_path(@project, @ref || @repository.root_ref)
+
+  - if project_nav_tab? :network
     = nav_link(controller: %w(network)) do
       = link_to "Network", project_network_path(@project, @ref || @repository.root_ref)
+
+  - if project_nav_tab? :graphs
     = nav_link(controller: %w(graphs)) do
       = link_to "Graphs", project_graph_path(@project, @ref || @repository.root_ref)
 
-  - if @project.issues_enabled
+  - if project_nav_tab? :issues
     = nav_link(controller: %w(issues milestones labels)) do
       = link_to url_for_project_issues do
         Issues
         - if @project.used_default_issues_tracker?
           %span.count.issue_counter= @project.issues.opened.count
 
-  - if @project.repo_exists? && @project.merge_requests_enabled
+  - if project_nav_tab? :merge_requests
     = nav_link(controller: :merge_requests) do
       = link_to project_merge_requests_path(@project) do
         Merge Requests
         %span.count.merge_counter= @project.merge_requests.opened.count
 
-  - if @project.wiki_enabled
+  - if project_nav_tab? :wiki
     = nav_link(controller: :wikis) do
       = link_to 'Wiki', project_wiki_path(@project, :home)
 
-  - if @project.wall_enabled
+  - if project_nav_tab? :wall
     = nav_link(controller: :walls) do
       = link_to 'Wall', project_wall_path(@project)
 
-  - if @project.snippets_enabled
+  - if project_nav_tab? :snippets
     = nav_link(controller: :snippets) do
       = link_to 'Snippets', project_snippets_path(@project)
 
-  - if can? current_user, :admin_project, @project
+  - if project_nav_tab? :settings
     = nav_link(html_options: {class: "#{project_tab_class}"}) do
       = link_to edit_project_path(@project), class: "stat-tab tab " do
         Settings